Enter your storefront URL and we’ll run a fast catalog eligibility check.
Check your business
We’ll quickly scan your website for FSA/HSA eligibility.
What a Letter of Medical Necessity does
What it is
A clinician’s note that makes a purchase FSA/HSA eligible for that customer.
Why it matters
Without one, most of what you sell can’t be bought with FSA/HSA dollars.
Why Burst
Burst gets the letter and handles the reimbursement. You change nothing.
How it works, in store and online
Watch the demo
Two short recordings of the live product on a sample Shopify store. No mockups, about a minute each.
The real request flow on a phone: a few questions, one fee, letter on the way.
But wait, there’s more
Shopify app
ADD ON
For Shopify stores
Free
Learn more
Post-purchase entry on your thank-you page
Works with Shopify and Shopify Plus
Order tagging for eligible purchases
Word on the street
—Pacagen, Burst merchant
reimbursed to shoppers through Burst
letters issued, same-day delivery
FAQs
What is Burst and how does it work?
How much does Burst cost?
Are there any additional fees?
How long does setup take?
Will this change my checkout or POS?
Is this allowed by the IRS?
Which FSA/HSA plans does it work with?
Free for merchants
Live today
No contracts
Free for merchants. No contracts. No setup fees.
